In general the admixture from that source has been more widely mixed into the human population in the subsequent centuries. But it should be emphasized that the Ancient Greeks themselves are much, much closer to us in time than they were to the era of human-Neanderthal hybridization. It's not unlike asking whether our grandparents' generation had less dilution of their Neanderthal heritage compared to ours Kinda? Maybe? In a sense that doesn't really matter, since it was already well-mixed into the human population by their time. As it was in the time of the Ancient Greeks, tens of thousands years after the last first-generation hybrids were probably born. Even "ancient" history is contemporary from the paleontologist's point of view.